a new study by the u.s. department of education paints a pretty bleak picture of california's high schools. only 76% of the state students actually graduate. that puts california at 32nd in the entire nation. pretty low. i recently met with an education pioneer who hopes to change how young people learn, a click at a time. 6 million students around the world and counting know his voice and drawing style. >> if you get two green marbles then you are going to win. >> reporter: but not everyone knows his face. sal khan is the founder of the khan academy and the man behind simple but effective video lessons about a wide range of topics, like the fiscal cliff. >> we're cutting on the order in $100 billion in government expenditures. >> reporter: khan started out teaching his cousin math over a we cam. when he posted his videos on youtube, they caught on like wildfire. khan quit his job at a hedge fund and began creating lessons in earnest from his closet. today, the khan academy boasts a full staff. universities